OSV-2021-556 Uncaught exception in java.base/java.util.Arrays.copyOf
An attacker can cause a denial of service by triggering an uncaught exception in the Jackson JSON parser during data processing.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2021-556?
OSV-2021-556 is a denial of service vulnerability in jackson-core, published on 25 Mar 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=32423
Crash type: Uncaught exception
Crash state:
java.base/java.util.Arrays.copyOf
com.fasterxml.jackson.core.util.TextBuffer.expandCurrentSegment
com.fasterxml.jackson.core.json.UTF8StreamJsonParser.addName
Which versions are affected by OSV-2021-556?
1 open source package ship an affected version, including jackson-core.
| Package | Affected | Fixed in |
|---|---|---|
jackson-core OSS-Fuzz | All versions | None |
How do I fix OSV-2021-556?
No fix has been published for OSV-2021-556 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is OSV-2021-556 being exploited?
There is no known exploitation of OSV-2021-556 in the wild and no public exploit code.